DuraVent DuraTech 7" - 8" Storm Collar w69 While the Tungsten Portable heater

While the Tungsten Portable heater is designed for extended use

Modular heat shield extension reduces clearances by up to 87

Empire Mantels Brochure

Cobalt (Blue)

it should be below 25%

DuraVent DuraTech 7" - 8" Storm Collar w69 While the Tungsten Portable heaterWith a Thermal Tech blanket insulation encased between dual walls, DuraTech offers the optimum in safety and performance. It keeps the outer wall of the chimney cool, while ensuring high flue gas temperatures for optimum draft performance. The inner wall is 25% thicker than competitive chimneys for an extra margin of safety. No locking bands or mechanical fasteners required. DuraTechs sleek 1" wall design provides for easy installations through 16" on